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Proceedings Paper

Development of defects detection in gluing glass
Author(s): Zongming Wu; Wei Yang; Tianquan Fan
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Paper Abstract

The defects engendering in the process of glass gluing are mainly flaws and delaminations which will reduce the stability and processing availability of the optical component. How to detect these defects has become a technical problem for a long time. Several Non-Destructive Test (NDT) methods such as ultrasonic C-scan, bubble tester and infrared thermography are effective in inspection of it at present. In this paper, these three techniques’ detection principle, advantages and disadvantages are introduced. On the basis of detection demands, photothermal radiometry that it has become a powerful tool to detect subsurface defects in composites because of its non-contact and highly sensitivity is used to detect defects in the gluing process of glass for the first time. The basic idea that glass-layer transmits the spectrum and the spectrum energy is absorbed by glue-layer is also put forward creatively. By monitoring the temperature variation of glue-layer in time domain using infrared thermal imager, the defects can be discovered.

Paper Details

Date Published: 15 October 2012
PDF: 6 pages
Proc. SPIE 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 84150J (15 October 2012); doi: 10.1117/12.973649
Show Author Affiliations
Zongming Wu, Institute of Optics and Electronics (China)
Graduate Univ. of the Chinese Academy of Sciences (China)
Wei Yang, Institute of Optics and Electronics (China)
Tianquan Fan, Institute of Optics and Electronics (China)


Published in SPIE Proceedings Vol. 8415:
6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Wenhan Jiang; Myung K. Cho; Fan Wu, Editor(s)

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